Am qualified sir @yousafharoonkhan My professor the my home work will be expiring in few hours to come, up til now is not yet voted on please help me and work it out before it expires.
https://steemit.com/hive-108451/@kingworldline/crypto-academy-season-2-week-3-home-work-post-yousafhoonkhan-on-decentralisation-and-centralisation-exchanges